or tile.
A domino is aLet be the number of ways placing dominoes without overlapping on a chessboard so that every square contains at least two uncovered unit squares which lie in the same row or column.
Find the last 4 digits of .
This section requires Javascript.
You are seeing this because something didn't load right. We suggest you, (a) try
refreshing the page, (b) enabling javascript if it is disabled on your browser and,
finally, (c)
loading the
non-javascript version of this page
. We're sorry about the hassle.
Please go to this link . Everything is explained there.